re: We are all Georgia fans.

if LSU beats an unbeaten Georgia in Atlanta, Georgia still gets in before LSU.

There are currently six unbeaten teams and seven once-beaten teams ranked ahead of LSU. There is a twice-beaten Notre Dame ranked ahead of them as well.

Georgia would be in
Washington/Oregon - one of them is a strong contender
Oklahoma/Texas - One of them as well
Michigan/Ohio State - winner very likely in.
Florida State - Would be hard for LSU to pass them

The numbers just don't bode well for an LSU spot in a four team playoff.

Edit to add: The only shot would be for Georgia to drop a couple of games and LSU win in Atlanta and become the most attractive SEC team. Then maybe.